For Bitcoin to be adopted as a legal tender, off course it must go through certain processes, but these processes are not ambiguous to say the least. Countries like El Salvador and not so recently The Central African Republic are Trail Blazers in the aforementioned. Looking at it realistically, the merits would certainly alleniate any demerits that may occur. It surely puts innovation where it should be on a pedestal, foreign cash injection becomes and the global phenomenon; inflation can be better managed. What is holding back is definitely from constituted authority, as households and individuals already accept Bitcoin in some forms as a legal ten. What is stopping it's gradual integration?
This is not a difficult thing to do, but the government's are only not interested in this because they cannot control it the way they would control the issuing, printing and regulating of fiat currencies. Whether bitcoin is made a legal tender or not, I don't think it is restricting anyone from making payments with bitcoin as long as both parties involved in the transaction have mutual understanding.
Countries now are becoming more bitcoin friendly, you can do what you want freely with like minds, but do not expect to hear from the government anytime soon that they are going to enact a law enforcing bitcoin on everyone as a means of payment.
This should not bother us much, even the Bitcoin community are populated with Bitcoin investors, traders and business people, not genuine people who want to do everyday payments with bitcoin.